The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
agate
1 ENTRIES FOUND:
agate
(noun)
agate
/
ˈ
ægət/
noun
plural
agates
agate
/
ˈ
ægət/
noun
plural
agates
Britannica Dictionary definition of AGATE
[
count
]
:
a very hard stone used especially in jewelry that has colors arranged in stripes or in patches
ASK THE EDITOR
What is the difference between 'too' and 'to'?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
institution
:
an established organization
Learn More »